Multithreading: What is the point of more threads than cores?

Question

I thought the point of a multi-core computer is that it could run multiple threads simultaneously. In that case, if you have a quad-core machine, what\'s the point of having

Answer 1

A thread is an abstraction that enables You to write code as simple as a sequence of operation, blissfully unaware of that the code is executed interlaced with other code, or parked waiting for IO, or (maybe somewhat more aware of) waiting for other thread's events or messages.